Lens-mounting.



G. JOHNSTON.

LENS MOUNTING.

APPLICATION FILED mmzs. 1915.

I 1,146,169 v PatentedJuly 13, 1915.

Wumsssss,

GEORGE JOHNSTON, 0F DETROIT, MICHIGAN.

LENS-MOUNTING.

Specification of Letters Patent.

Patented July 13, 1915.

Application filed January 25, 1915. Serial No. 4,102.

To all whom it may concern Be it known that I, GEORGE JOHNSTON, acitizen of the United States, residing at Detroit, county of Wayne,State of Michigan, have invented a certain new and useful Improvement inLens-Mountings, and declare the following to be a full, clear, and exactdescription of the same, such as will enable others skilled in the artto which it pertains to make and use the same, reference being had tothe accompanying drawings, which form a part of this specification.

This invention relates to eye-glasses and spectacles.

It comprises a fastening device for connecting the bridge, or inspectacles the bows and bridge, with rimless glasses. It is a fasteningwhich is especially designed to largely do away with the liability ofbreaking the lens that heretofore has existed by reason of the use of ascrew passing through the lens.

In the drawings, Figure 1 is a perspective of the shield that iscemented to the lens. Fig. 2 is a view of the lens and the shieldshowing the relative sizes of the perforations through the shield andthrough the lens. Fig. 3 shows the shield applied to a fragment of thelens. Fig. 4: is a fragmentary view of a pair of eye-glasses showing thebridge connected with the lens.

I-Ieretofore it has been customary to attach the bridge and the guard tothe lens by the use of a strap and passing a screw through perforationsin the strap and a perforation in the glass. This has been a fruitfulcause of broken and chipped lenses. I believe that it has also beensuggested to cement the strap to the lens so as to avoid the liabilityof breakage and chipping but in case the cement becomes loosened thelens falls and breaks. My invention obviates both of these diflicultieswithout partaking of any of their disadvantages.

a designates the lens, I) the bridge, 0 the guard pivoted on the stud dthat passes through the yoke-like terminal 6 of the bridge. The guard isyieldingly engaged by a strong but small spring not shown. This is acustomary construction and needs no exposition.

is a finger piece by which the guards may be slightly expanded to placethem upon the nose.

My invention comprises a shield g cemented to the glass as shown in Fig.3 and Copies of this patent may be obtained for held in place by suchcement. This shield is provided with a pair of ears It provided eachwith a perforation. These ears are intended to fit over the perforation2' in the lens but it will be noted by comparing the perforations in thelens and in the shield, as shown in Fig. 2, that the perforation oropening in the lens is larger than the perforation in the shield.Consequently, when the shield is cemented to the lens and the twoperforations are brought to register and into concentric relation, thescrew 7' may be passed through the perforations and it will be held inspaced relation with respect to the lens where it passes through. Theresult is that liability of chipping or breaking the lens with the screwis materially lessened. However, it will be noted that if in any casethe shield comes loose from the lens the lens will not fall because thescrew will still retain it. The screw is retained in the strap terminalis of the bridge.

What I claim is: I

1. The combination with a lens of a shield cemented to the lens andprovided with a perforation, the said lens being also provided with anopening therethrough larger than the perforation through the shield, theperforation and opening being arranged so that the smaller perforationoverlies the larger opening, a member for supporting the lens and ascrew carried by said member and passed through the opening of the lensand the perforation of the shield and held out of contact with the glassof the lens by the shield with its perforation smaller than the openingin the lens.

2. The combination with a lens of a shield straddling the lens at oneend provided with projecting ears having perforations adapted toregister with the perforations in the lens but of less diameter than theperforations in the lens, a member for supporting the lens and a screwcarried by said member passing through the perforations of the shieldand the lens and held out of contact with the glass of the lens byreason of the diflerence in diameter of the perforations.

In testimony whereof, I sign this specification in the presence of twowitnesses.

GEORGE JOHNSTON.

Witnesses:

STUART C. BARNES, VIRGINIA C. SPRATT.

five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

